Answer:
Network
Step-by-step explanation:
When you have devices connected together to pass, share and exchange information; this connection is regarded as network.
Take for instance. you need to get a file from your friend's mobile phone; when you connect your phone to your friend's phone via Bluetooth, Xender or via whatever convenient means of connection; that is a network.
Another instance is when you connect multiple systems in a CBT examination; this connection is also regarded as a network.